100 New York State Museum 



Euphorbia maculata L. Milk Purslane 



Common chiefly along the railroads but sometimes 

 in cultivated soil. All three species of Euphorbia 

 just mentioned appear to be introduced and not 

 native of this region. 

 Euphorbia Cyparissias L. Spurge 



Indian cemetery near Quaker Bridge and else- 

 where. Not common. 



CALLITRICHACEAE (Water Starwort Family) 

 Callitriche heterophylla Pursh. Water Starwort 



In slow streams, ditches and pools. Rare. Wolf 

 run at Elko, Red House creek, Pool near Quaker run 

 above Headquarters etc. 



ANACARDIACEAE (Cashew Family) 

 Rhus typhina L. Staghorn Sumach 



Dry banks and thickets, usually in gravelly or 

 sandy soil. Occasional. Quaker Bridge. 

 Rhus glabra L. Smooth Sumach 



In sandy, gravelly, sterile or acid soil on the 

 higher ridges of the conglomerate formation and on 

 bluffs, banks and benches of the Allegheny valley. 

 Infrequent. 

 Rhus copallina L. Dwarf Sumach 



In sterile sandy soil of the burned over bottom- 

 lands about a mile south of Quaker Bridge, between 

 the railroad and the river. 

 Rhus Toxicodendron L. Poison Ivy, Poison Oak 



Climbing on trees or sprawling over the ground in 

 dry or moist open places, thickets and open woods, 

 chiefly in the lower valleys and on the bottomlands 

 of the Allegheny and Tunungwant, var. radicans 

 (L.) Torr. 



